Script Format

I regularly needed to output data in a custom format, which is why I created a DSL based on Rhai.

DSL

The most important part of the DSL is the ++ operator.

The ++ operator takes the values to its left and right and stores them internally. Once the script is done running, all the stored values get concatenated and returned.

This allows for a really nice way to express what should get output:

let some_number = 1;

// will output 'Test 1'
"Test " ++ some_number;

There are also a two more conveniences, namely NL and IND.

• NL is a constant holding the newline character (\r).
• IND is a constant holding the indentation string (Default: four spaces).

Theres also functions with the same name that take a number and return the value that amount of time. So if you want to indent something by 3 levels, you can just write IND(3).

Quick Start

In order to use the DSL you need create a FormattingEngine<T> where T is the main type you want to format.

If you don't have a single main type you can use the UntypedFormattingEngine instead, but there you have to register all the types you need yourself, otherwise Rhai wont be able to work with your data structures.